His family founded international clothing chain C&A and are considered to be one of the richest in Europe.

Also sharing the couple's joy were Crown Prince Willem-Alexander and his wife Maxima, who was the epitome of elegance in a sheer beige top and feather detail skirt.

Johan Friso's activist wife Mabel was also present. Her bright smile showed that the constant support of her husband's family – particularly sister-in-law Maxima – is helping her through these difficult times.